It looks like the underlying feature which enables reverse debugging, Process Recording, could do what you describe: https://sourceware.org/gdb/wiki/ProcessRec

It looks like the underlying feature which enables reverse debugging, Process Recording, could do what you describe: https://sourceware.org/gdb/wiki/ProcessRecord https://sourceware.org/gdb/wiki/ProcessRecord the data may only be in-process, if so it would need to be save-able and load-able.